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| Number | Title | Issue Date |
| 7429132 | Hydrostatic air bearing with a porous metal ring A hydrostatic air bearing in which a journal rotates within a cavity formed within a bearing race, and a sleeve that rotates with the journal within the cavity of the bearing race, where the sleeve is formed of a porous metallic material that allows for a bearing fl... | 09/30/2008 |
| 7387444 | Oil-impregnated sintered bearing Disclosed is an oil-impregnated sintered bearing in which local relative sliding between the oil-impregnated sintered bearing and the shaft is avoided, thereby mitigating stress concentration on the bearing surface of the oil-impregnated sintered bearing. An oil-imp... | 06/17/2008 |
| 7306374 | Special type bearing device The invention provides a special type bearing device that is insusceptible to damage, is light in weight, has a long service life and excellent wear resistance, is insusceptible to the effect of change in temperature, is easy to fabricate, and has little offensivene... | 12/11/2007 |
| 7287907 | Surface densification of powder metal bearing caps A high performance main bearing cap has particular surfaces densified for improved fatigue crack resistance. The surfaces densified are the bolted face inside of a perimetral margin and outside of bolt head interface areas around the main bolt holes, the surfaces of... | 10/30/2007 |
| 7252435 | Linear motion guide unit A linear motion guide unit is disclosed which makes it possible to a long-lasting steady application of lubricant and also makes sure of preventing effectively occurrence of particles of dirt. The linear motion guide unit is comprised of a guide member, more than on... | 08/07/2007 |
| 7249890 | Friction bearing composite material with a metal base layer A friction bearing composite material comprises a metal base layer, a porous support layer applied thereto, and a low friction layer made from PTFE forming a bearing surface for a bearing partner. The low friction material forming the sliding surface also fills the ... | 07/31/2007 |
| 7186028 | Hydrodynamic bearing device A hydrodynamic bearing device capable of inhibiting leakage of a working fluid to an outside of a bearing and preventing reduction in radial bearing rigidity, and capable of keeping a gap between a thrust bearing and a radial bearing favorable and rotating stably. T... | 03/06/2007 |
| 7168858 | Surface densification of powder metal bearing caps A high performance main bearing cap has particular surfaces densified for improved fatigue crack resistance. The surfaces densified are the bolted face (F) inside of a perimetral margin and outside of bold head interface areas around the main bolt holes (B), the sur... | 01/30/2007 |
| 7168857 | Special type bearing device The invention provides a special type bearing device that is insusceptible to damage, is light in weight, has a long service life and excellent wear resistance, is insusceptible to the effect of change in temperature, is easy to fabricate, and has little offensivene... | 01/30/2007 |
| 7147378 | Low friction, abrasion-resistant bearing materials A friction-reducing abrasion resistant bearing material is described. The material comprises a monolithic, porous polytetrafluoroethylene (ePTFE) having dispersed therein a wear-resistant thermosetting or thermoplastic resin material. ... | 12/12/2006 |
| 7101087 | Sliding member A sliding member includes a substrate, a porous layer provided on the surface of the substrate and a sliding layer with which the porous layer is impregnated and coated. The sliding layer contains polybenzimidazole, 1–70 vol % of a solid lubricant and 0.1–10 vol... | 09/05/2006 |
| 7083385 | Axial flow fan motor An axial flow fan motor having an impeller molded integrally with a shaft from a synthetic resin. The shaft is easily assembled with a bearing arrangement by being brought into tight contact with the inner ring of the bearing arrangement and is reliably fixed theret... | 08/01/2006 |
| 7014367 | Oil-impregnated sintered sliding bearing An oil-impregnated sintered sliding bearing formed of a porous iron-based sintered alloy with quenched structure and receiving a high surface pressure capable of reducing the number of finishing steps by cutting and grinding and providing a bearing performance equiv... | 03/21/2006 |
| 6951424 | Motor with axially moveable bearing member A motor includes a rotor section with a rotor shaft having an end section, and a stator section including a yoke section disposed opposite the rotor section. The motor is also equipped with a bearing assembly having a bearing member that includes a main bearing sect... | 10/04/2005 |
| 6951423 | Sintered bearing and production method therefor A sintered bearing is produced by a production method comprising: compacting a metallic raw material powder into a bearing green compact; sintering the green compact into a sintered compact; forming a resin coating 20 over the entire surface of the sintered c... | 10/04/2005 |
| 6942388 | Bearing structure A bearing structure includes a cylindrical first member (10), and a second member (20) received in the first member. The first member is made of ceramic sintered material. The first member defines a first axle hole (11), and the first axle hole ... | 09/13/2005 |
| 6846109 | Sintered bearing and production method therefor A production method for a sintered bearing, comprises compacting a raw metallic material powder into a bearing green compact; sintering the green compact into a sintered compact; and forming a resin coating over the entire surface of the sintered compact by electrod... | 01/25/2005 |
| 6799893 | Special type bearing device The invention provides a special type bearing device that is insusceptible to damage, is light in weight, has a long service life and excellent wear resistance, is insusceptible to the effect of change in temperature, is easy to fabricate, and has little offensivene... | 10/05/2004 |
| 6659647 | Ceramic dynamic pressure bearing, motor with bearing, hard disk device, and polygon scanner A ceramic dynamic pressure bearing, includes: a first member having an outer periphery formed with a gap forming surface causing a radial dynamic pressure, and a second member having an inner periphery defining a through hole formed with a gap forming sur... | 12/09/2003 |
| 6626576 | Duplex powder metal bearing caps and method of making them A main bearing cap (A') made of powder metal has a body portion (Y) made from one powder metal material (Q), and a bearing arch portion (H), foot joint face portions (S) and/or wings (W) made of a different powder metal material (P). The material (Q) of t... | 09/30/2003 |
| 6599018 | Oil-impregnant sintered bearing and manufacturing method thereof, and motor The present invention is for providing an oil-impregnant sintered bearing, which can reliably preserve an oil film on a sliding face, and a method for manufacturing the oil-impregnant sintered bearing. An oil-impregnant sintered bearing is made by providi... | 07/29/2003 |
| 6540404 | Sintered plain bearing for engines and gears A sintered plain bearing for motors and gear drives, having a running surface formed by a bearing bore and capable of having lubricant applied to it from lubricant reservoirs in the bearing, in which the bearing bore has, alternatingly distributed over th... | 04/01/2003 |
| 6511225 | Calibrated sliding bearing bushing and calibrating tool for producing the sliding bearing bushing A sliding bearing bushing has a first end side, a second end side, an inwardly cylindrical second longitudinal portion which is calibrated by a material compression and adjoins the second end side, a substantially hollow conical first longitudinal portion... | 01/28/2003 |
| 6505971 | Sintered oil retaining bearing and fabrication method thereof A sintered oil retaining bearing has a bearing bore through which a rotary shaft is inserted formed at a bearing main unit made of a porous sintered alloy. The inner circumferential wall serving as the bearing bore includes a center inner circumferential ... | 01/14/2003 |
| 6415512 | Method and apparatus for surface processing of sintered oilless bearing A method for surface processing of sintered oilless bearing and an apparatus thereof are disclosed by which method the efficiency of covering the pores and the surface roughness of protuberance that is nonporous surface may be improved by means of surface... | 07/09/2002 |
| 6402488 | Oil pump An oil pump that can be reduced in weight and is excellent in wear resistance and easy to manufacture is provided. The oil pump includes an oil pump housing formed of aluminum alloy, and an inner rotor and an outer rotor that slide along the oil pump hous... | 06/11/2002 |
| 6398416 | Sintered friction bearing for motors and gears A sintered friction bearing for motors and gears with a bearing surface, which is formed by a bearing bore and can have a lubricant from lubricant depositories in the bearing. The bearing bore has alternating highly compressed, small-pored bearing surface... | 06/04/2002 |
| 6357920 | Sintered oil retaining bearing and spindle motor for information equipment There is provided a sintered oil retaining bearing that secures the stability of an oil film and achieves high running accuracy through management to exclude a variation in the size of surface openings in the bearing surface, particularly the presence of ... | 03/19/2002 |
| 6341421 | Production method of porous static-pressure air bearing Metal powder is filled in a through-hole of a base member and a base porous body is formed by bonding the metal powder with each other and by bonding the metal powder to the base member so that an end surface on a bearing surface of the metal powder fille... | 01/29/2002 |
| 6342306 | Bearing material for porous hydrostatic gas bearing and porous hydrostatic gas bearing using the same A bearing material includes a backing metal and a porous sintered metal layer sintered onto a surface of the backing metal, particles of an inorganic substance being contained at grain boundaries of the porous sintered metal layer. The porous sintered met... | 01/29/2002 |
| 6338575 | Self-lubricating bearings and assemblies thereof A self-lubricating bearing includes an axle hole having a first section and a second section. The first section includes a first inner transverse length and the second section includes a second inner transverse length that is greater than the first inner ... | 01/15/2002 |
| 6299424 | Sliding member and refrigerating compressor using the same When sliding elements, slide bushings, vanes and Oldham rings employed in various types of refrigeration compressors and other applications meet the following conditions, they resist sticking to aluminum-base components, resist depletion of the oil film o... | 10/09/2001 |
| 6270259 | Powdered metal sintered bearing with improved oil flow polygonal interior bore A powdered metal sintered bearing has a polygonal interior bore with areas of increased density for load bearing and areas of less density that improve its ability to provide a flow of oil from the external surface of the bearing to the bore.... | 08/07/2001 |
| 6244749 | Dynamic pressure bearing device and method for manufacturing same The dynamic pressure bearing device is structured such that the pores of porous material as they are are disposed in the surfaces thereof forming the negative pressure cancel portions 15b and a lubricating fluid is supplied to the negative pressure genera... | 06/12/2001 |
| 6223437 | Method for fabricating a friction bearing, and friction bearing Methods for fabricating a friction bearing, in particular for ceramic shafts, made of metallic hardenable sintered material having an open pore volume of at least 15%, wherein the sintered material is brought into a predetermined shape and is subsequently... | 05/01/2001 |
| 6174087 | Friction bearing A friction bearing, for ceramic shafts, made of metallic hardenable sintered material having an open pore volume of at least 15%, wherein the sintered material is brought into a predetermined shape and is subsequently sintered. A local wear and tear of sh... | 01/16/2001 |
| 6164831 | Rolling bearing for high-speed rotating equipment A rolling bearing for a high-speed rotating equipment is constructed of an outer ring, an inner ring, rolling elements and a retainer to rotatably support at least a rotary shaft thereon. The rolling elements are non-metallic inorganic balls. The retainer... | 12/26/2000 |
| 6164846 | Apparatus and method for transporting a web A web transport apparatus (10) useful for transporting web (16), such as photosensitive strips or sheets, in a corrosive materials environment has first and second rollers (12, 14) each having a sleeve portion (26, 36) with bushings (28, 38) and intermesh... | 12/26/2000 |
| 6120188 | Bearing unit manufacturing method bearing unit and motor using the bearing unit An inexpensive bearing unit having a high rotational accuracy and a high reliability is provided for use in information and video-acoustic equipments. In the case of an oil-impregnated sintered bearing (1) in which an inner surface (2) sliding together wi... | 09/19/2000 |
| 6119346 | Composite porous bearing and method of making same A bearing comprising different materials having oil-filled pores in them has a relief space in the middle section which is not provided by machining. The materials are different, have different characteristics, and bear different portions of load the bear... | 09/19/2000 |
